fuzz: BIP324: damage ciphertext/aad in full byte range #28951
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Currently the damaging of input data for decryption (either ciphertext or aad) only ever happens in the lower nibble within the byte at the damage position, as the bit position for the `damage_val` byte was calculated with `damage_bit & 3` (corresponding to `% 4`) rather than `damage_bit & 7` (corresponding to the expected `% 8`).
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, bitcoin#28849, bitcoin#28805, bitcoin#28951, bitcoin#29058, bitcoin#29239, partial bitcoin#28331, bitcoin#28452 (BIP324 backports: part 2) 5dd60c4 merge bitcoin#29239: Make v2transport default for addnode RPC when enabled (Kittywhiskers Van Gogh) b2ac426 merge bitcoin#29058: use v2transport for manual/addrfetch connections, add to -netinfo (Kittywhiskers Van Gogh) 92e862a merge bitcoin#28951: damage ciphertext/aad in full byte range (Kittywhiskers Van Gogh) 4e96e26 merge bitcoin#28805: Make existing functional tests compatible with --v2transport (Kittywhiskers Van Gogh) 9371e2e merge bitcoin#28849: fix node index bug when comparing peerinfo (Kittywhiskers Van Gogh) 400c9dd merge bitcoin#28634: add check for missing garbage terminator detection (Kittywhiskers Van Gogh) 65eb194 merge bitcoin#28588: add checks for v1 prefix matching / wrong network magic detection (Kittywhiskers Van Gogh) 6074974 merge bitcoin#28577: raise V1_PREFIX_LEN from 12 to 16 (Kittywhiskers Van Gogh) ff92d1a partial bitcoin#28331: BIP324 integration (Kittywhiskers Van Gogh) f9f8805 fix: drop `CConnman::mapNodesWithDataToSend`, use transport data (UdjinM6) d39d8a4 partial bitcoin#28452: Do not use std::vector = {} to release memory (Kittywhiskers Van Gogh) Pull request description: ## Additional Information * Dependent on #6280 * Dependent on #6276 * Dependency for #6329 * [bitcoin#28452](bitcoin#28452) was backported as the behavior it introduces is required for backports like [bitcoin#28331](bitcoin#28331). As it pre-dates earlier BIP324 backports, the `ClearShrink` usage from those backports have also been incorporated into this backport. * When backporting [bitcoin#28331](bitcoin#28331), in TestFramework's `add_nodes()`, `extra_args[i]` is not converted to a `list` like it is done upstream and avoiding duplication of `-v2transport=1` is instead done by an additional check. This is done to prevent test failures in `feature_mnehf.py`. * The local variable `args` is removed in [bitcoin#28805](bitcoin#28805) as it does nothing (the argument appending logic is removed as part of the backport) and upstream removes it anyways. Special thanks to UdjinM6 for significant contributions to this and dependent PRs! 🎉 ## Breaking Changes None expected. ## Checklist - [x] I have performed a self-review of my own code - [x] I have commented my code, particularly in hard-to-understand areas **(note: N/A)** - [x] I have added or updated relevant unit/integration/functional/e2e tests - [x] I have made corresponding changes to the documentation - [x] I have assigned this pull request to a milestone _(for repository code-owners and collaborators only)_ ACKs for top commit: UdjinM6: light ACK 5dd60c4 PastaPastaPasta: utACK 5dd60c4 Tree-SHA512: 7f3d0e54e1c96fc99b2d6b1e64485110aa73aeec0e4e4245ed4e6dc0529a7608e9c39103af636d5945d289775c40d3d15d7d4a75bea82462194dbf355fca48dc
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This PR is a tiny improvement for the
bip324_cipher_roundtripfuzz target: currently the damaging of input data for decryption (either ciphertext or aad) only ever happens in the lower nibble within the byte at the damage position, as the bit position for thedamage_valbyte was calculated withdamage_bit & 3(corresponding to% 4) rather thandamage_bit & 7(corresponding to the expected% 8).Noticed while reviewing #28263 which uses similar constructs.